北師大版英語九年《unit 4 inventions and inventors》ppt復習課件(文件)
【正文】 finish） in two days’ time. ? Milk should _______ （ keep） in the fridge. ? White clothes and colored clothes should not _______（ wash） together. ? School uniforms needn’t ______（ wear） at all times. ? （二）情態(tài)動詞： ? 當不是很確定時，用 might或 may. （ might比 may更不確定） ? Who knows what will happen. You may even have married by then. ? It might be a tool for cutting things. I don’t know. ? 當確定某件事是唯一的可能時，用 must. ? It must be some sort of toy. ? 當確信不可能發(fā)生時，用 cannot. ? It cannot be a radio because it’s too big to be a radio. ? Ex. Complete the sentences with might be / may be, cannot be, or must be. ? 1. This exam _________ too difficult for the students. I don’t think they can finish it. ? 2. It _________ a book for children. There are many cartoons in it. ? 3. It _________ true. I think you made a mistake. ? 4. Mr. Smith ________________ in London, Paris, or Tokyo. No one knows for sure. ? 5. That _________ John. He is in New York now. ? 6. Did you hear the doorbell? It _______ Nicholas. I am expecting him.
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